Site items in: Content by Author Hiroki Kujiraoka

Content Types

To take a deep dive into our archives, please select filters and click Search. Search Results (Found )

Display Options

No Results Found.

Please try modifying your filters and filtering again.

Please add a keyword and/or a dropdown filter to generate a precise search, or use the sitewide search at the top of the page for a more general search.

Searching... Please wait[cancel Search]

Presentation

Evaluation of the Cement Clinker Fired in the Combustion Furnace of Heavy-Oil and NH3

Hiroki Kujiraoka Tatsurou Izumi Yuya Yoshizuru Takeshi Suemasu Makoto Ueda Toyoaki Niki Takayasu Itou Ryuichi Murai Fumiteru Akamatsu

In recent years, global warming caused by an increase in CO2 emission released by combustion of fossil fuel has become a big problem. To realize a low-carbon society, active use of renewable energy and promotion of hydrogen energy are necessary. We are participating in “SIP (Strategic Innovation Promotion Program) energy carriers”, developing technology to replace 30% fossil fuel with ammonia (NH3) on the calorie basis. Assuming that NH3 is used as a thermal energy for a cement kiln, we conducted the following two basic experiments. First, we fired the clinker in the atmosphere-controlled electric furnace, calculated the reaction rate of…

Presentation

Simulation Analysis of NH3 Mixed Combustion in Clinker Manufacturing Process

Tatsurou Izumi Hiroki Kujiraoka Yuya Yoshizuru Takeshi Suemasu Makoto Ueda Toyoaki Niki Takayasu Itou Masayuki Nishio Ryuichi Murai Fumiteru Akamatsu

Recent years, the action for the low-carbon society becomes active all over the world. NH3 has potential to become the free-carbon energy source. In SIP project, that Cabinet Office started, we work on the technology development applying NH3 to the field of industrial furnace (SIP: Strategic Innovation Promotion Program). In this study, we evaluated the effect of NH3 use in the cement clinker manufacturing process. Cement manufacturing is one of the fields of industry to exhaust large amounts of CO2. As past works, we studied for the reduction of heat consumption rate, troubleshooting and so on by using kiln operation…